Summary

To assess the role of interstitial brachytherapy alone compared to whole breast irradiation
in a defined low-risk group of invasive breast cancer or ductal carcinoma in situ concerning
local failure (all ipsilateral local recurrences) to affirm the hypothesis that local
control rates in each arm are equivalent.

To assess the role of interstitial brachytherapy alone compared to whole breast irradiation
in a defined low-risk group of invasive breast cancer or ductal carcinoma in situ concerning
local failure (all ipsilateral local recurrences) to affirm the hypothesis that local
control rates in each arm are equivalent.